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containers_fixes.hpp
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1/* +---------------------------------------------------------------------------+
2 | Mobile Robot Programming Toolkit (MRPT) |
3 | http://www.mrpt.org/ |
4 | |
5 | Copyright (c) 2005-2014, Individual contributors, see AUTHORS file |
6 | See: http://www.mrpt.org/Authors - All rights reserved. |
7 | Released under BSD License. See details in http://www.mrpt.org/License |
8 +---------------------------------------------------------------------------+ */
9
10#ifndef STLPLUS_CONTAINERS_FIXES
11#define STLPLUS_CONTAINERS_FIXES
12////////////////////////////////////////////////////////////////////////////////
13
14// Author: Andy Rushton
15// Copyright: (c) Andy Rushton, 2007
16// License: BSD License, see ../docs/license.html
17
18// Contains work arounds for OS or Compiler specific problems with container
19// templates
20
21////////////////////////////////////////////////////////////////////////////////
22
23////////////////////////////////////////////////////////////////////////////////
24// Unnecessary compiler warnings
25////////////////////////////////////////////////////////////////////////////////
26
27#ifdef _MSC_VER
28// Microsoft Visual Studio
29// shut up the following irritating warnings
30// 4275 - VC6, exported class was derived from a class that was not exported
31// 4786 - VC6, identifier string exceeded maximum allowable length and was truncated (only affects debugger)
32// 4305 - VC6, identifier type was converted to a smaller type
33// 4503 - VC6, decorated name was longer than the maximum the compiler allows (only affects debugger)
34// 4309 - VC6, type conversion operation caused a constant to exceeded the space allocated for it
35// 4290 - VC6, C++ exception specification ignored
36// 4800 - VC6, forcing value to bool 'true' or 'false' (performance warning)
37// 4355 - VC6, 'this' : used in base member initializer list
38// 4675 - VC7.1, "change" in function overload resolution _might_ have altered program
39// 4996 - VC8, 'xxxx' was declared deprecated
40#pragma warning(push) // JLBC: Added for MRPT
41#pragma warning(disable: 4275 4786 4305 4503 4309 4290 4800 4355 4675 4996)
42#endif
43
44#ifdef __BORLANDC__
45// Borland
46// Shut up the following irritating warnings
47// 8008 - Condition is always true.
48// Whenever the compiler encounters a constant comparison that (due to
49// the nature of the value being compared) is always true or false, it
50// issues this warning and evaluates the condition at compile time.
51// 8060 - Possibly incorrect assignment.
52// This warning is generated when the compiler encounters an assignment
53// operator as the main operator of a conditional expression (part of
54// an if, while, or do-while statement). This is usually a
55// typographical error for the equality operator.
56// 8066 - Unreachable code.
57// A break, continue, goto, or return statement was not followed by a
58// label or the end of a loop or function. The compiler checks while,
59// do, and for loops with a constant test condition, and attempts to
60// recognize loops that can't fall through.
61#pragma warn -8008
62#pragma warn -8060
63#pragma warn -8066
64#endif
65
66////////////////////////////////////////////////////////////////////////////////
67// Problems with the typename keyword
68////////////////////////////////////////////////////////////////////////////////
69
70// There are problems with using the 'typename' keyword. Technically, if you
71// use a type member of a template class (i.e. a type declared within the
72// template class by a local typedef), you need to tell the compiler that it
73// is a type name. This is because the compiler cannot work out whether a
74// member is a type, a method or a data field at compile time. However,
75// support for the typename keyword has traditionally been incomplete in both
76// gcc and Visual Studio. I have used macros to try to resolve this issue. The
77// macros add the keyword for compiler versions that require it and omit it
78// for compiler versions that do not support it
79
80// There are five places where typename keywords cause problems:
81//
82// 1) in a typedef where a template class's member type is being mapped onto
83// a type definition within another template class or function
84// e.g. template<typename T> fn () {
85// typedef typename someclass<T>::member_type local_type;
86// ^^^^^^^^
87// 2) in a function parameter declaration, with similar rules to the above
88// e.g. template<typename T> fn (typename someclass<T>::member_type)
89// ^^^^^^^^
90// 3) in instantiating a template, the parameter to the template, with similar rules to the above
91// e.g. template_class<typename someclass<T>::member_type>
92// ^^^^^^^^
93// 4) Return expressions
94// e.g. return typename ntree<T>::const_iterator(this,m_root);
95// ^^^^^^^^
96// 5) Creating temporary objects when passing arguments to a function or constructor
97// e.g. return typename ntree<T>::const_prefix_iterator(typename ntree<T>::const_iterator(this,m_root));
98// ^^^^^^^^
99// Note that the typename keyword is only required when the type being referred to is a member of a template class
100//
101// So far it *seems* as if all compilers either require all of them or none of
102// them, so this set of situations can be handled by a single macro
103
104// default values, overridden for individual problem cases below
105#define TYPENAME typename
106
107#ifdef __GNUC__
108// GCC
109// - pre-version 3 didn't handle typename in any of these cases
110// - version 3 onwards, typename is required for all three cases as per default
111#if __GNUC__ < 3
112// gcc prior to v3
113#undef TYPENAME
114#define TYPENAME
115#endif
116#endif
117
118#ifdef _MSC_VER
119// Visual Studio
120// - version 6 (compiler v.12) cannot handle typename in any of these cases
121// - version 7 (.NET) (compiler v.13) requires a typename in a parameter specification but supports all
122// - version 8 (2005) (compiler v.14) requires parameters and templates, supports all
123#if _MSC_VER < 1300
124// compiler version 12 and earlier
125#undef TYPENAME
126#define TYPENAME
127#endif
128#endif
129
130#ifdef _MSC_VER
131#pragma warning(pop) // JLBC: Added for MRPT
132#endif
133
134////////////////////////////////////////////////////////////////////////////////
135#endif



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